[{"data":1,"prerenderedAt":1599},["ShallowReactive",2],{"navigation_docs":3,"-start-introduction":464,"-start-introduction-surround":1595},[4,30,80,245,379,434],{"title":5,"path":6,"stem":7,"children":8,"page":29},"Start","\u002Fstart","1.start",[9,14,19,24],{"title":10,"path":11,"stem":12,"icon":13},"Introduction","\u002Fstart\u002Fintroduction","1.start\u002F1.introduction","i-lucide-info",{"title":15,"path":16,"stem":17,"icon":18},"Why start with evlog","\u002Fstart\u002Fwhy-evlog","1.start\u002F2.why-evlog","i-lucide-rocket",{"title":20,"path":21,"stem":22,"icon":23},"Installation","\u002Fstart\u002Finstallation","1.start\u002F3.installation","i-lucide-download",{"title":25,"path":26,"stem":27,"icon":28},"Quick Start","\u002Fstart\u002Fquick-start","1.start\u002F4.quick-start","i-lucide-zap",false,{"title":31,"path":32,"stem":33,"children":34,"page":29},"Learn","\u002Flearn","2.learn",[35,40,45,50,55,60,65,70,75],{"title":36,"path":37,"stem":38,"icon":39},"Overview","\u002Flearn\u002Foverview","2.learn\u002F0.overview","i-lucide-list",{"title":41,"path":42,"stem":43,"icon":44},"Simple Logging","\u002Flearn\u002Fsimple-logging","2.learn\u002F1.simple-logging","i-lucide-terminal",{"title":46,"path":47,"stem":48,"icon":49},"Wide Events","\u002Flearn\u002Fwide-events","2.learn\u002F2.wide-events","i-lucide-layers",{"title":51,"path":52,"stem":53,"icon":54},"Structured Errors","\u002Flearn\u002Fstructured-errors","2.learn\u002F3.structured-errors","i-lucide-shield-alert",{"title":56,"path":57,"stem":58,"icon":59},"Lifecycle","\u002Flearn\u002Flifecycle","2.learn\u002F4.lifecycle","i-lucide-arrow-right-left",{"title":61,"path":62,"stem":63,"icon":64},"Sampling","\u002Flearn\u002Fsampling","2.learn\u002F5.sampling","i-lucide-filter",{"title":66,"path":67,"stem":68,"icon":69},"Auto-Redaction","\u002Flearn\u002Fredaction","2.learn\u002F6.redaction","i-lucide-eye-off",{"title":71,"path":72,"stem":73,"icon":74},"Typed Fields","\u002Flearn\u002Ftyped-fields","2.learn\u002F7.typed-fields","i-simple-icons-typescript",{"title":76,"path":77,"stem":78,"icon":79},"Catalogs","\u002Flearn\u002Fcatalogs","2.learn\u002F8.catalogs","i-lucide-book-open",{"title":81,"path":82,"stem":83,"children":84,"page":29},"Integrate","\u002Fintegrate","3.integrate",[85,89,157],{"title":36,"path":86,"stem":87,"icon":88},"\u002Fintegrate\u002Foverview","3.integrate\u002F0.overview","i-lucide-plug",{"title":90,"path":91,"stem":92,"children":93,"page":29},"Adapters","\u002Fintegrate\u002Fadapters","3.integrate\u002Fadapters",[94,97,137],{"title":36,"path":95,"stem":96,"icon":39},"\u002Fintegrate\u002Fadapters\u002Foverview","3.integrate\u002Fadapters\u002F01.overview",{"title":98,"path":99,"stem":100,"children":101,"page":29},"Cloud","\u002Fintegrate\u002Fadapters\u002Fcloud","3.integrate\u002Fadapters\u002Fcloud",[102,107,112,117,122,127,132],{"title":103,"path":104,"stem":105,"icon":106},"Axiom","\u002Fintegrate\u002Fadapters\u002Fcloud\u002Faxiom","3.integrate\u002Fadapters\u002Fcloud\u002F01.axiom","i-custom-axiom",{"title":108,"path":109,"stem":110,"icon":111},"OTLP","\u002Fintegrate\u002Fadapters\u002Fcloud\u002Fotlp","3.integrate\u002Fadapters\u002Fcloud\u002F02.otlp","i-simple-icons-opentelemetry",{"title":113,"path":114,"stem":115,"icon":116},"PostHog","\u002Fintegrate\u002Fadapters\u002Fcloud\u002Fposthog","3.integrate\u002Fadapters\u002Fcloud\u002F03.posthog","i-simple-icons-posthog",{"title":118,"path":119,"stem":120,"icon":121},"Sentry","\u002Fintegrate\u002Fadapters\u002Fcloud\u002Fsentry","3.integrate\u002Fadapters\u002Fcloud\u002F04.sentry","i-simple-icons-sentry",{"title":123,"path":124,"stem":125,"icon":126},"Better Stack","\u002Fintegrate\u002Fadapters\u002Fcloud\u002Fbetter-stack","3.integrate\u002Fadapters\u002Fcloud\u002F05.better-stack","i-simple-icons-betterstack",{"title":128,"path":129,"stem":130,"icon":131},"Datadog","\u002Fintegrate\u002Fadapters\u002Fcloud\u002Fdatadog","3.integrate\u002Fadapters\u002Fcloud\u002F06.datadog","i-simple-icons-datadog",{"title":133,"path":134,"stem":135,"icon":136},"HyperDX","\u002Fintegrate\u002Fadapters\u002Fcloud\u002Fhyperdx","3.integrate\u002Fadapters\u002Fcloud\u002F07.hyperdx","i-custom-hyperdx",{"title":138,"path":139,"stem":140,"children":141,"page":29},"Self-Hosted","\u002Fintegrate\u002Fadapters\u002Fself-hosted","3.integrate\u002Fadapters\u002Fself-hosted",[142,147,152],{"title":143,"path":144,"stem":145,"icon":146},"File System","\u002Fintegrate\u002Fadapters\u002Fself-hosted\u002Ffs","3.integrate\u002Fadapters\u002Fself-hosted\u002F01.fs","i-lucide-hard-drive",{"title":148,"path":149,"stem":150,"icon":151},"NuxtHub","\u002Fintegrate\u002Fadapters\u002Fself-hosted\u002Fnuxthub","3.integrate\u002Fadapters\u002Fself-hosted\u002F02.nuxthub","i-simple-icons-nuxt",{"title":153,"path":154,"stem":155,"icon":156},"Memory","\u002Fintegrate\u002Fadapters\u002Fself-hosted\u002Fmemory","3.integrate\u002Fadapters\u002Fself-hosted\u002F03.memory","i-lucide-cpu",{"title":158,"path":159,"stem":160,"children":161,"page":29},"Frameworks","\u002Fintegrate\u002Fframeworks","3.integrate\u002Fframeworks",[162,166,171,176,181,186,191,196,201,206,211,216,221,226,230,235,240],{"title":36,"path":163,"stem":164,"icon":165},"\u002Fintegrate\u002Fframeworks\u002Foverview","3.integrate\u002Fframeworks\u002F00.overview","i-lucide-layout-grid",{"title":167,"path":168,"stem":169,"icon":170},"Nuxt","\u002Fintegrate\u002Fframeworks\u002Fnuxt","3.integrate\u002Fframeworks\u002F01.nuxt","i-simple-icons-nuxtdotjs",{"title":172,"path":173,"stem":174,"icon":175},"Next.js","\u002Fintegrate\u002Fframeworks\u002Fnextjs","3.integrate\u002Fframeworks\u002F02.nextjs","i-simple-icons-nextdotjs",{"title":177,"path":178,"stem":179,"icon":180},"SvelteKit","\u002Fintegrate\u002Fframeworks\u002Fsveltekit","3.integrate\u002Fframeworks\u002F03.sveltekit","i-simple-icons-svelte",{"title":182,"path":183,"stem":184,"icon":185},"Nitro","\u002Fintegrate\u002Fframeworks\u002Fnitro","3.integrate\u002Fframeworks\u002F04.nitro","i-custom-nitro",{"title":187,"path":188,"stem":189,"icon":190},"TanStack Start","\u002Fintegrate\u002Fframeworks\u002Ftanstack-start","3.integrate\u002Fframeworks\u002F05.tanstack-start","i-custom-tanstack",{"title":192,"path":193,"stem":194,"icon":195},"NestJS","\u002Fintegrate\u002Fframeworks\u002Fnestjs","3.integrate\u002Fframeworks\u002F06.nestjs","i-simple-icons-nestjs",{"title":197,"path":198,"stem":199,"icon":200},"Express","\u002Fintegrate\u002Fframeworks\u002Fexpress","3.integrate\u002Fframeworks\u002F07.express","i-simple-icons-express",{"title":202,"path":203,"stem":204,"icon":205},"Hono","\u002Fintegrate\u002Fframeworks\u002Fhono","3.integrate\u002Fframeworks\u002F08.hono","i-simple-icons-hono",{"title":207,"path":208,"stem":209,"icon":210},"Fastify","\u002Fintegrate\u002Fframeworks\u002Ffastify","3.integrate\u002Fframeworks\u002F09.fastify","i-simple-icons-fastify",{"title":212,"path":213,"stem":214,"icon":215},"Elysia","\u002Fintegrate\u002Fframeworks\u002Felysia","3.integrate\u002Fframeworks\u002F10.elysia","i-custom-elysia",{"title":217,"path":218,"stem":219,"icon":220},"React Router","\u002Fintegrate\u002Fframeworks\u002Freact-router","3.integrate\u002Fframeworks\u002F11.react-router","i-custom-reactrouter",{"title":222,"path":223,"stem":224,"icon":225},"Cloudflare Workers","\u002Fintegrate\u002Fframeworks\u002Fcloudflare-workers","3.integrate\u002Fframeworks\u002F12.cloudflare-workers","i-simple-icons-cloudflare",{"title":227,"path":228,"stem":229,"icon":74},"Standalone","\u002Fintegrate\u002Fframeworks\u002Fstandalone","3.integrate\u002Fframeworks\u002F13.standalone",{"title":231,"path":232,"stem":233,"icon":234},"Astro","\u002Fintegrate\u002Fframeworks\u002Fastro","3.integrate\u002Fframeworks\u002F14.astro","i-simple-icons-astro",{"title":236,"path":237,"stem":238,"icon":239},"oRPC","\u002Fintegrate\u002Fframeworks\u002Forpc","3.integrate\u002Fframeworks\u002F15.orpc","i-lucide-network",{"title":241,"path":242,"stem":243,"icon":244},"AWS Lambda","\u002Fintegrate\u002Fframeworks\u002Faws-lambda","3.integrate\u002Fframeworks\u002F16.aws-lambda","i-custom-lambda",{"title":246,"path":247,"stem":248,"children":249,"page":29},"Use Cases","\u002Fuse-cases","4.use-cases",[250,254,259,288,316,348,369,374],{"title":36,"path":251,"stem":252,"icon":253},"\u002Fuse-cases\u002Foverview","4.use-cases\u002F0.overview","i-lucide-list-checks",{"title":255,"path":256,"stem":257,"icon":258},"Client Logging","\u002Fuse-cases\u002Fclient-logging","4.use-cases\u002F1.client-logging","i-lucide-monitor",{"title":260,"icon":261,"path":262,"stem":263,"children":264,"page":29},"AI SDK","i-simple-icons-vercel","\u002Fuse-cases\u002Fai-sdk","4.use-cases\u002F2.ai-sdk",[265,268,273,278,283],{"title":36,"path":266,"stem":267,"icon":39},"\u002Fuse-cases\u002Fai-sdk\u002Foverview","4.use-cases\u002F2.ai-sdk\u002F01.overview",{"title":269,"path":270,"stem":271,"icon":272},"Usage","\u002Fuse-cases\u002Fai-sdk\u002Fusage","4.use-cases\u002F2.ai-sdk\u002F02.usage","i-lucide-code",{"title":274,"path":275,"stem":276,"icon":277},"Options","\u002Fuse-cases\u002Fai-sdk\u002Foptions","4.use-cases\u002F2.ai-sdk\u002F03.options","i-lucide-sliders",{"title":279,"path":280,"stem":281,"icon":282},"Metadata","\u002Fuse-cases\u002Fai-sdk\u002Fmetadata","4.use-cases\u002F2.ai-sdk\u002F04.metadata","i-lucide-database",{"title":284,"path":285,"stem":286,"icon":287},"Telemetry","\u002Fuse-cases\u002Fai-sdk\u002Ftelemetry","4.use-cases\u002F2.ai-sdk\u002F05.telemetry","i-lucide-activity",{"title":289,"icon":290,"path":291,"stem":292,"children":293,"page":29},"Better Auth","i-simple-icons-betterauth","\u002Fuse-cases\u002Fbetter-auth","4.use-cases\u002F3.better-auth",[294,297,302,307,311],{"title":36,"path":295,"stem":296,"icon":39},"\u002Fuse-cases\u002Fbetter-auth\u002Foverview","4.use-cases\u002F3.better-auth\u002F01.overview",{"title":298,"path":299,"stem":300,"icon":301},"Identify User","\u002Fuse-cases\u002Fbetter-auth\u002Fidentify-user","4.use-cases\u002F3.better-auth\u002F02.identify-user","i-lucide-user-check",{"title":303,"path":304,"stem":305,"icon":306},"Middleware","\u002Fuse-cases\u002Fbetter-auth\u002Fmiddleware","4.use-cases\u002F3.better-auth\u002F03.middleware","i-lucide-shield",{"title":308,"path":309,"stem":310,"icon":258},"Client Sync","\u002Fuse-cases\u002Fbetter-auth\u002Fclient-sync","4.use-cases\u002F3.better-auth\u002F04.client-sync",{"title":312,"path":313,"stem":314,"icon":315},"Performance","\u002Fuse-cases\u002Fbetter-auth\u002Fperformance","4.use-cases\u002F3.better-auth\u002F05.performance","i-lucide-gauge",{"title":317,"icon":318,"path":319,"stem":320,"children":321,"page":29},"Audit Logs","i-lucide-shield-check","\u002Fuse-cases\u002Faudit","4.use-cases\u002F4.audit",[322,325,330,335,340,344],{"title":36,"path":323,"stem":324,"icon":39},"\u002Fuse-cases\u002Faudit\u002Foverview","4.use-cases\u002F4.audit\u002F01.overview",{"title":326,"path":327,"stem":328,"icon":329},"Schema","\u002Fuse-cases\u002Faudit\u002Fschema","4.use-cases\u002F4.audit\u002F02.schema","i-lucide-file-text",{"title":331,"path":332,"stem":333,"icon":334},"Recording","\u002Fuse-cases\u002Faudit\u002Frecording","4.use-cases\u002F4.audit\u002F03.recording","i-lucide-pen-line",{"title":336,"path":337,"stem":338,"icon":339},"Drains","\u002Fuse-cases\u002Faudit\u002Fpipeline","4.use-cases\u002F4.audit\u002F04.pipeline","i-lucide-link",{"title":341,"path":342,"stem":343,"icon":318},"Compliance","\u002Fuse-cases\u002Faudit\u002Fcompliance","4.use-cases\u002F4.audit\u002F05.compliance",{"title":345,"path":346,"stem":347,"icon":79},"Recipes","\u002Fuse-cases\u002Faudit\u002Frecipes","4.use-cases\u002F4.audit\u002F06.recipes",{"title":284,"icon":315,"path":349,"stem":350,"children":351,"page":29},"\u002Fuse-cases\u002Ftelemetry","4.use-cases\u002F4.telemetry",[352,355,360,365],{"title":36,"path":353,"stem":354,"icon":39},"\u002Fuse-cases\u002Ftelemetry\u002Foverview","4.use-cases\u002F4.telemetry\u002F01.overview",{"title":356,"path":357,"stem":358,"icon":359},"Setup","\u002Fuse-cases\u002Ftelemetry\u002Fsetup","4.use-cases\u002F4.telemetry\u002F02.setup","i-lucide-wrench",{"title":361,"path":362,"stem":363,"icon":364},"Ingest","\u002Fuse-cases\u002Ftelemetry\u002Fingest","4.use-cases\u002F4.telemetry\u002F03.ingest","i-lucide-server",{"title":366,"path":367,"stem":368,"icon":79},"Reference","\u002Fuse-cases\u002Ftelemetry\u002Freference","4.use-cases\u002F4.telemetry\u002F04.reference",{"title":370,"path":371,"stem":372,"icon":373},"Enrichers","\u002Fuse-cases\u002Fenrichers","4.use-cases\u002F5.enrichers","i-lucide-sparkles",{"title":375,"path":376,"stem":377,"icon":378},"eve","\u002Fuse-cases\u002Feve","4.use-cases\u002F5.eve","i-custom-eve",{"title":380,"path":381,"stem":382,"children":383,"page":29},"Extend","\u002Fextend","5.extend",[384,388,393,398,403,407,411,415,419,424,429],{"title":36,"path":385,"stem":386,"icon":387},"\u002Fextend\u002Foverview","5.extend\u002F0.overview","i-lucide-blocks",{"title":389,"path":390,"stem":391,"icon":392},"Stream","\u002Fextend\u002Fstream","5.extend\u002F1.stream","i-lucide-radio-tower",{"title":394,"path":395,"stem":396,"icon":397},"Custom framework","\u002Fextend\u002Fcustom-framework","5.extend\u002F10.custom-framework","i-lucide-puzzle",{"title":399,"path":400,"stem":401,"icon":402},"FS reader","\u002Fextend\u002Ffs-reader","5.extend\u002F2.fs-reader","i-lucide-folder-search",{"title":345,"path":404,"stem":405,"icon":406},"\u002Fextend\u002Fconsumer-recipes","5.extend\u002F3.consumer-recipes","i-lucide-chef-hat",{"title":408,"path":409,"stem":410,"icon":387},"Plugins","\u002Fextend\u002Fplugins","5.extend\u002F4.plugins",{"title":412,"path":413,"stem":414,"icon":373},"Custom enrichers","\u002Fextend\u002Fcustom-enrichers","5.extend\u002F5.custom-enrichers",{"title":416,"path":417,"stem":418,"icon":64},"Tail sampling","\u002Fextend\u002Ftail-sampling","5.extend\u002F6.tail-sampling",{"title":420,"path":421,"stem":422,"icon":423},"Identity headers","\u002Fextend\u002Fidentity-headers","5.extend\u002F7.identity-headers","i-lucide-fingerprint",{"title":425,"path":426,"stem":427,"icon":428},"Custom drains","\u002Fextend\u002Fcustom-drains","5.extend\u002F8.custom-drains","i-lucide-share-2",{"title":430,"path":431,"stem":432,"icon":433},"Drain pipeline","\u002Fextend\u002Fdrain-pipeline","5.extend\u002F9.drain-pipeline","i-lucide-workflow",{"title":366,"path":435,"stem":436,"children":437,"page":29},"\u002Freference","6.reference",[438,443,446,451,455,460],{"title":439,"path":440,"stem":441,"icon":442},"Configuration","\u002Freference\u002Fconfiguration","6.reference\u002F1.configuration","i-lucide-settings",{"title":312,"path":444,"stem":445,"icon":315},"\u002Freference\u002Fperformance","6.reference\u002F2.performance",{"title":447,"path":448,"stem":449,"icon":450},"Vite Plugin","\u002Freference\u002Fvite-plugin","6.reference\u002F3.vite-plugin","i-custom-vite",{"title":452,"path":453,"stem":454,"icon":318},"Best Practices","\u002Freference\u002Fbest-practices","6.reference\u002F4.best-practices",{"title":456,"path":457,"stem":458,"icon":459},"vs Other Loggers","\u002Freference\u002Fvs-other-loggers","6.reference\u002F5.vs-other-loggers","i-lucide-scale",{"title":461,"path":462,"stem":463,"icon":373},"Agent Skills","\u002Freference\u002Fagent-skills","6.reference\u002F6.agent-skills",{"id":465,"title":10,"body":466,"description":1580,"extension":1581,"links":1582,"meta":1591,"navigation":1592,"path":11,"seo":1593,"stem":12,"__hash__":1594},"docs\u002F1.start\u002F1.introduction.md",{"type":467,"value":468,"toc":1569},"minimark",[469,482,499,504,507,512,534,547,551,554,617,624,628,631,635,641,783,786,789,1212,1215,1218,1230,1483,1487,1494,1517,1527,1531,1565],[470,471,472,476,477,481],"p",{},[473,474,475],"strong",{},"evlog"," is a modern TypeScript logger built for everything you ship. It gives you simple structured logs (a drop-in for ",[478,479,480],"code",{},"console.log",", pino, or consola), wide events that accumulate context across an operation, and structured errors that explain why they happened — all in one API, all behind the same drain pipeline. Use it in CLIs, libraries, background jobs, edge workers, and HTTP handlers without switching loggers.",[470,483,484,485,492,493,498],{},"Inspired by ",[486,487,491],"a",{"href":488,"rel":489},"https:\u002F\u002Floggingsucks.com\u002F",[490],"nofollow","Logging Sucks"," by ",[486,494,497],{"href":495,"rel":496},"https:\u002F\u002Fx.com\u002Fboristane",[490],"Boris Tane",".",[500,501,503],"h2",{"id":502},"philosophy","Philosophy",[470,505,506],{},"Traditional logging is broken. Your logs are scattered across dozens of files. Each request generates 10+ log lines. When something goes wrong, you're left grep-ing through noise hoping to find signal.",[470,508,509,511],{},[473,510,475],{}," takes a different approach:",[513,514,515,523,526,529],"card-group",{},[516,517,519,520,522],"card",{"icon":44,"title":518},"Structured Logging","Replace ",[478,521,480],{}," with typed, structured events that flow through a drain pipeline. Same level filtering, redaction, and pretty\u002FJSON output as pino or consola.",[516,524,525],{"icon":49,"title":46},"Accumulate context over any unit of work (a request, script, or job) and emit once. The two modes coexist — neither is an upgrade of the other.",[516,527,528],{"icon":54,"title":51},"Errors that explain why they occurred and how to fix them.",[516,530,533],{"icon":531,"title":532},"i-lucide-palette","Pretty for Dev","Human-readable in development, machine-parseable JSON in production.",[535,536,539,540,543,544,546],"callout",{"color":537,"icon":538},"info","i-lucide-globe","Not running an HTTP framework? See ",[486,541,542],{"href":228},"Standalone TypeScript"," for scripts, workers, and CLIs, and ",[486,545,222],{"href":223}," for the edge runtime.",[500,548,550],{"id":549},"why-evlog-over-pino-winston-or-consola","Why evlog over pino, winston, or consola",[470,552,553],{},"evlog is a fully-featured general-purpose logger that happens to also do wide events. Concretely:",[555,556,557,568,586,603],"ul",{},[558,559,560,563,564,567],"li",{},[473,561,562],{},"Zero transitive dependencies"," and ~6 kB gzip — nothing to audit, nothing that breaks on the next Node LTS. Benchmarked at ",[486,565,566],{"href":444},"~3 µs\u002Frequest",", 7.7x faster than pino in the wide event pattern (1 event vs 4 log lines) and competitive on every other path.",[558,569,570,573,574,577,578,581,582,585],{},[473,571,572],{},"Same API in every context"," — scripts, frameworks, edge runtimes, browser, library code. No ",[478,575,576],{},"pino-http"," vs ",[478,579,580],{},"pino"," split, no separate ",[478,583,584],{},"consola"," reporters per environment.",[558,587,588,602],{},[473,589,590,591,594,595,594,598,601],{},"Structured errors with ",[478,592,593],{},"why"," \u002F ",[478,596,597],{},"fix",[478,599,600],{},"link"," built in"," — your error toast finally tells users what went wrong and what to do, your on-call stops reverse-engineering stack traces.",[558,604,605,608,609,612,613,616],{},[473,606,607],{},"Wide events as a free upgrade path"," — when you need to correlate context across an operation, the same logger gives you ",[478,610,611],{},"log.set"," + ",[478,614,615],{},"log.emit"," instead of stitching log lines together later.",[470,618,619,620,623],{},"See the full ",[486,621,622],{"href":457},"feature comparison"," (parity matrix, honest gaps, and migration snippets) for a side-by-side with pino, winston, and consola.",[500,625,627],{"id":626},"three-ways-to-log","Three Ways to Log",[470,629,630],{},"evlog provides three APIs for different contexts. You can use all three in the same project.",[632,633,41],"h3",{"id":634},"simple-logging",[470,636,637,638,640],{},"Fire-and-forget structured logs. Replace ",[478,639,480],{},", consola, or pino:",[642,643,649],"pre",{"className":644,"code":645,"filename":646,"language":647,"meta":648,"style":648},"language-typescript shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","import { log } from 'evlog'\n\nlog.info('auth', 'User logged in')\nlog.error({ action: 'payment', error: 'card_declined', userId: 42 })\n","src\u002Findex.ts","typescript","",[478,650,651,683,690,725],{"__ignoreMap":648},[652,653,656,660,664,668,671,674,677,680],"span",{"class":654,"line":655},"line",1,[652,657,659],{"class":658},"s7zQu","import",[652,661,663],{"class":662},"sMK4o"," {",[652,665,667],{"class":666},"sTEyZ"," log",[652,669,670],{"class":662}," }",[652,672,673],{"class":658}," from",[652,675,676],{"class":662}," '",[652,678,475],{"class":679},"sfazB",[652,681,682],{"class":662},"'\n",[652,684,686],{"class":654,"line":685},2,[652,687,689],{"emptyLinePlaceholder":688},true,"\n",[652,691,693,696,698,701,704,707,710,712,715,717,720,722],{"class":654,"line":692},3,[652,694,695],{"class":666},"log",[652,697,498],{"class":662},[652,699,537],{"class":700},"s2Zo4",[652,702,703],{"class":666},"(",[652,705,706],{"class":662},"'",[652,708,709],{"class":679},"auth",[652,711,706],{"class":662},[652,713,714],{"class":662},",",[652,716,676],{"class":662},[652,718,719],{"class":679},"User logged in",[652,721,706],{"class":662},[652,723,724],{"class":666},")\n",[652,726,728,730,732,735,737,740,744,747,749,752,754,756,759,761,763,766,768,770,773,775,779,781],{"class":654,"line":727},4,[652,729,695],{"class":666},[652,731,498],{"class":662},[652,733,734],{"class":700},"error",[652,736,703],{"class":666},[652,738,739],{"class":662},"{",[652,741,743],{"class":742},"swJcz"," action",[652,745,746],{"class":662},":",[652,748,676],{"class":662},[652,750,751],{"class":679},"payment",[652,753,706],{"class":662},[652,755,714],{"class":662},[652,757,758],{"class":742}," error",[652,760,746],{"class":662},[652,762,676],{"class":662},[652,764,765],{"class":679},"card_declined",[652,767,706],{"class":662},[652,769,714],{"class":662},[652,771,772],{"class":742}," userId",[652,774,746],{"class":662},[652,776,778],{"class":777},"sbssI"," 42",[652,780,670],{"class":662},[652,782,724],{"class":666},[632,784,46],{"id":785},"wide-events",[470,787,788],{},"Accumulate context progressively over any operation, then emit a single comprehensive event:",[790,791,792,925,1055],"code-group",{},[642,793,796],{"className":644,"code":794,"filename":795,"language":647,"meta":648,"style":648},"import { createLogger } from 'evlog'\n\nconst log = createLogger({ jobId: 'sync-001', queue: 'emails' })\nlog.set({ batch: { size: 50, processed: 50 } })\nlog.emit()\n","scripts\u002Fsync-job.ts",[478,797,798,817,821,869,912],{"__ignoreMap":648},[652,799,800,802,804,807,809,811,813,815],{"class":654,"line":655},[652,801,659],{"class":658},[652,803,663],{"class":662},[652,805,806],{"class":666}," createLogger",[652,808,670],{"class":662},[652,810,673],{"class":658},[652,812,676],{"class":662},[652,814,475],{"class":679},[652,816,682],{"class":662},[652,818,819],{"class":654,"line":685},[652,820,689],{"emptyLinePlaceholder":688},[652,822,823,827,830,833,835,837,839,842,844,846,849,851,853,856,858,860,863,865,867],{"class":654,"line":692},[652,824,826],{"class":825},"spNyl","const",[652,828,829],{"class":666}," log ",[652,831,832],{"class":662},"=",[652,834,806],{"class":700},[652,836,703],{"class":666},[652,838,739],{"class":662},[652,840,841],{"class":742}," jobId",[652,843,746],{"class":662},[652,845,676],{"class":662},[652,847,848],{"class":679},"sync-001",[652,850,706],{"class":662},[652,852,714],{"class":662},[652,854,855],{"class":742}," queue",[652,857,746],{"class":662},[652,859,676],{"class":662},[652,861,862],{"class":679},"emails",[652,864,706],{"class":662},[652,866,670],{"class":662},[652,868,724],{"class":666},[652,870,871,873,875,878,880,882,885,887,889,892,894,897,899,902,904,906,908,910],{"class":654,"line":727},[652,872,695],{"class":666},[652,874,498],{"class":662},[652,876,877],{"class":700},"set",[652,879,703],{"class":666},[652,881,739],{"class":662},[652,883,884],{"class":742}," batch",[652,886,746],{"class":662},[652,888,663],{"class":662},[652,890,891],{"class":742}," size",[652,893,746],{"class":662},[652,895,896],{"class":777}," 50",[652,898,714],{"class":662},[652,900,901],{"class":742}," processed",[652,903,746],{"class":662},[652,905,896],{"class":777},[652,907,670],{"class":662},[652,909,670],{"class":662},[652,911,724],{"class":666},[652,913,915,917,919,922],{"class":654,"line":914},5,[652,916,695],{"class":666},[652,918,498],{"class":662},[652,920,921],{"class":700},"emit",[652,923,924],{"class":666},"()\n",[642,926,929],{"className":644,"code":927,"filename":928,"language":647,"meta":648,"style":648},"import { createRequestLogger } from 'evlog'\n\nconst log = createRequestLogger({ method: 'POST', path: '\u002Fapi\u002Fcheckout' })\nlog.set({ user: { id: 1, plan: 'pro' } })\nlog.emit()\n","src\u002Fworker.ts",[478,930,931,950,954,998,1045],{"__ignoreMap":648},[652,932,933,935,937,940,942,944,946,948],{"class":654,"line":655},[652,934,659],{"class":658},[652,936,663],{"class":662},[652,938,939],{"class":666}," createRequestLogger",[652,941,670],{"class":662},[652,943,673],{"class":658},[652,945,676],{"class":662},[652,947,475],{"class":679},[652,949,682],{"class":662},[652,951,952],{"class":654,"line":685},[652,953,689],{"emptyLinePlaceholder":688},[652,955,956,958,960,962,964,966,968,971,973,975,978,980,982,985,987,989,992,994,996],{"class":654,"line":692},[652,957,826],{"class":825},[652,959,829],{"class":666},[652,961,832],{"class":662},[652,963,939],{"class":700},[652,965,703],{"class":666},[652,967,739],{"class":662},[652,969,970],{"class":742}," method",[652,972,746],{"class":662},[652,974,676],{"class":662},[652,976,977],{"class":679},"POST",[652,979,706],{"class":662},[652,981,714],{"class":662},[652,983,984],{"class":742}," path",[652,986,746],{"class":662},[652,988,676],{"class":662},[652,990,991],{"class":679},"\u002Fapi\u002Fcheckout",[652,993,706],{"class":662},[652,995,670],{"class":662},[652,997,724],{"class":666},[652,999,1000,1002,1004,1006,1008,1010,1013,1015,1017,1020,1022,1025,1027,1030,1032,1034,1037,1039,1041,1043],{"class":654,"line":727},[652,1001,695],{"class":666},[652,1003,498],{"class":662},[652,1005,877],{"class":700},[652,1007,703],{"class":666},[652,1009,739],{"class":662},[652,1011,1012],{"class":742}," user",[652,1014,746],{"class":662},[652,1016,663],{"class":662},[652,1018,1019],{"class":742}," id",[652,1021,746],{"class":662},[652,1023,1024],{"class":777}," 1",[652,1026,714],{"class":662},[652,1028,1029],{"class":742}," plan",[652,1031,746],{"class":662},[652,1033,676],{"class":662},[652,1035,1036],{"class":679},"pro",[652,1038,706],{"class":662},[652,1040,670],{"class":662},[652,1042,670],{"class":662},[652,1044,724],{"class":666},[652,1046,1047,1049,1051,1053],{"class":654,"line":914},[652,1048,695],{"class":666},[652,1050,498],{"class":662},[652,1052,921],{"class":700},[652,1054,924],{"class":666},[642,1056,1059],{"className":644,"code":1057,"filename":1058,"language":647,"meta":648,"style":648},"import { useLogger } from 'evlog'\n\nexport default defineEventHandler(async (event) => {\n  const log = useLogger(event)\n  log.set({ user: { id: 1, plan: 'pro' } })\n  return { success: true }\n  \u002F\u002F auto-emitted on response end\n})\n","server\u002Fapi\u002Fcheckout.post.ts",[478,1060,1061,1080,1084,1116,1134,1177,1197,1204],{"__ignoreMap":648},[652,1062,1063,1065,1067,1070,1072,1074,1076,1078],{"class":654,"line":655},[652,1064,659],{"class":658},[652,1066,663],{"class":662},[652,1068,1069],{"class":666}," useLogger",[652,1071,670],{"class":662},[652,1073,673],{"class":658},[652,1075,676],{"class":662},[652,1077,475],{"class":679},[652,1079,682],{"class":662},[652,1081,1082],{"class":654,"line":685},[652,1083,689],{"emptyLinePlaceholder":688},[652,1085,1086,1089,1092,1095,1097,1100,1103,1107,1110,1113],{"class":654,"line":692},[652,1087,1088],{"class":658},"export",[652,1090,1091],{"class":658}," default",[652,1093,1094],{"class":700}," defineEventHandler",[652,1096,703],{"class":666},[652,1098,1099],{"class":825},"async",[652,1101,1102],{"class":662}," (",[652,1104,1106],{"class":1105},"sHdIc","event",[652,1108,1109],{"class":662},")",[652,1111,1112],{"class":825}," =>",[652,1114,1115],{"class":662}," {\n",[652,1117,1118,1121,1123,1126,1128,1130,1132],{"class":654,"line":727},[652,1119,1120],{"class":825},"  const",[652,1122,667],{"class":666},[652,1124,1125],{"class":662}," =",[652,1127,1069],{"class":700},[652,1129,703],{"class":742},[652,1131,1106],{"class":666},[652,1133,724],{"class":742},[652,1135,1136,1139,1141,1143,1145,1147,1149,1151,1153,1155,1157,1159,1161,1163,1165,1167,1169,1171,1173,1175],{"class":654,"line":914},[652,1137,1138],{"class":666},"  log",[652,1140,498],{"class":662},[652,1142,877],{"class":700},[652,1144,703],{"class":742},[652,1146,739],{"class":662},[652,1148,1012],{"class":742},[652,1150,746],{"class":662},[652,1152,663],{"class":662},[652,1154,1019],{"class":742},[652,1156,746],{"class":662},[652,1158,1024],{"class":777},[652,1160,714],{"class":662},[652,1162,1029],{"class":742},[652,1164,746],{"class":662},[652,1166,676],{"class":662},[652,1168,1036],{"class":679},[652,1170,706],{"class":662},[652,1172,670],{"class":662},[652,1174,670],{"class":662},[652,1176,724],{"class":742},[652,1178,1180,1183,1185,1188,1190,1194],{"class":654,"line":1179},6,[652,1181,1182],{"class":658},"  return",[652,1184,663],{"class":662},[652,1186,1187],{"class":742}," success",[652,1189,746],{"class":662},[652,1191,1193],{"class":1192},"sfNiH"," true",[652,1195,1196],{"class":662}," }\n",[652,1198,1200],{"class":654,"line":1199},7,[652,1201,1203],{"class":1202},"sHwdD","  \u002F\u002F auto-emitted on response end\n",[652,1205,1207,1210],{"class":654,"line":1206},8,[652,1208,1209],{"class":662},"}",[652,1211,724],{"class":666},[470,1213,1214],{},"One log, all context. Everything you need to understand what happened.",[632,1216,51],{"id":1217},"structured-errors",[470,1219,1220,1221,1223,1224,1226,1227,1229],{},"Errors with actionable context: ",[478,1222,593],{}," it happened, how to ",[478,1225,597],{}," it, and a ",[478,1228,600],{}," to docs:",[790,1231,1232,1356],{},[642,1233,1235],{"className":644,"code":1234,"filename":1058,"language":647,"meta":648,"style":648},"import { createError } from 'evlog'\n\nthrow createError({\n  message: 'Payment failed',\n  status: 402,\n  why: 'Card declined by issuer (insufficient funds)',\n  fix: 'Try a different payment method or contact your bank',\n  link: 'https:\u002F\u002Fdocs.example.com\u002Fpayments\u002Fdeclined',\n})\n",[478,1236,1237,1256,1260,1272,1289,1301,1317,1333,1349],{"__ignoreMap":648},[652,1238,1239,1241,1243,1246,1248,1250,1252,1254],{"class":654,"line":655},[652,1240,659],{"class":658},[652,1242,663],{"class":662},[652,1244,1245],{"class":666}," createError",[652,1247,670],{"class":662},[652,1249,673],{"class":658},[652,1251,676],{"class":662},[652,1253,475],{"class":679},[652,1255,682],{"class":662},[652,1257,1258],{"class":654,"line":685},[652,1259,689],{"emptyLinePlaceholder":688},[652,1261,1262,1265,1267,1269],{"class":654,"line":692},[652,1263,1264],{"class":658},"throw",[652,1266,1245],{"class":700},[652,1268,703],{"class":666},[652,1270,1271],{"class":662},"{\n",[652,1273,1274,1277,1279,1281,1284,1286],{"class":654,"line":727},[652,1275,1276],{"class":742},"  message",[652,1278,746],{"class":662},[652,1280,676],{"class":662},[652,1282,1283],{"class":679},"Payment failed",[652,1285,706],{"class":662},[652,1287,1288],{"class":662},",\n",[652,1290,1291,1294,1296,1299],{"class":654,"line":914},[652,1292,1293],{"class":742},"  status",[652,1295,746],{"class":662},[652,1297,1298],{"class":777}," 402",[652,1300,1288],{"class":662},[652,1302,1303,1306,1308,1310,1313,1315],{"class":654,"line":1179},[652,1304,1305],{"class":742},"  why",[652,1307,746],{"class":662},[652,1309,676],{"class":662},[652,1311,1312],{"class":679},"Card declined by issuer (insufficient funds)",[652,1314,706],{"class":662},[652,1316,1288],{"class":662},[652,1318,1319,1322,1324,1326,1329,1331],{"class":654,"line":1199},[652,1320,1321],{"class":742},"  fix",[652,1323,746],{"class":662},[652,1325,676],{"class":662},[652,1327,1328],{"class":679},"Try a different payment method or contact your bank",[652,1330,706],{"class":662},[652,1332,1288],{"class":662},[652,1334,1335,1338,1340,1342,1345,1347],{"class":654,"line":1206},[652,1336,1337],{"class":742},"  link",[652,1339,746],{"class":662},[652,1341,676],{"class":662},[652,1343,1344],{"class":679},"https:\u002F\u002Fdocs.example.com\u002Fpayments\u002Fdeclined",[652,1346,706],{"class":662},[652,1348,1288],{"class":662},[652,1350,1352,1354],{"class":654,"line":1351},9,[652,1353,1209],{"class":662},[652,1355,724],{"class":666},[642,1357,1362],{"className":1358,"code":1359,"filename":1360,"language":1361,"meta":648,"style":648},"language-json shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","{\n  \"statusCode\": 402,\n  \"message\": \"Payment failed\",\n  \"data\": {\n    \"why\": \"Card declined by issuer (insufficient funds)\",\n    \"fix\": \"Try a different payment method or contact your bank\",\n    \"link\": \"https:\u002F\u002Fdocs.example.com\u002Fpayments\u002Fdeclined\"\n  }\n}\n","Response","json",[478,1363,1364,1368,1385,1405,1418,1438,1456,1473,1478],{"__ignoreMap":648},[652,1365,1366],{"class":654,"line":655},[652,1367,1271],{"class":662},[652,1369,1370,1373,1376,1379,1381,1383],{"class":654,"line":685},[652,1371,1372],{"class":662},"  \"",[652,1374,1375],{"class":825},"statusCode",[652,1377,1378],{"class":662},"\"",[652,1380,746],{"class":662},[652,1382,1298],{"class":777},[652,1384,1288],{"class":662},[652,1386,1387,1389,1392,1394,1396,1399,1401,1403],{"class":654,"line":692},[652,1388,1372],{"class":662},[652,1390,1391],{"class":825},"message",[652,1393,1378],{"class":662},[652,1395,746],{"class":662},[652,1397,1398],{"class":662}," \"",[652,1400,1283],{"class":679},[652,1402,1378],{"class":662},[652,1404,1288],{"class":662},[652,1406,1407,1409,1412,1414,1416],{"class":654,"line":727},[652,1408,1372],{"class":662},[652,1410,1411],{"class":825},"data",[652,1413,1378],{"class":662},[652,1415,746],{"class":662},[652,1417,1115],{"class":662},[652,1419,1420,1423,1426,1428,1430,1432,1434,1436],{"class":654,"line":914},[652,1421,1422],{"class":662},"    \"",[652,1424,593],{"class":1425},"sBMFI",[652,1427,1378],{"class":662},[652,1429,746],{"class":662},[652,1431,1398],{"class":662},[652,1433,1312],{"class":679},[652,1435,1378],{"class":662},[652,1437,1288],{"class":662},[652,1439,1440,1442,1444,1446,1448,1450,1452,1454],{"class":654,"line":1179},[652,1441,1422],{"class":662},[652,1443,597],{"class":1425},[652,1445,1378],{"class":662},[652,1447,746],{"class":662},[652,1449,1398],{"class":662},[652,1451,1328],{"class":679},[652,1453,1378],{"class":662},[652,1455,1288],{"class":662},[652,1457,1458,1460,1462,1464,1466,1468,1470],{"class":654,"line":1199},[652,1459,1422],{"class":662},[652,1461,600],{"class":1425},[652,1463,1378],{"class":662},[652,1465,746],{"class":662},[652,1467,1398],{"class":662},[652,1469,1344],{"class":679},[652,1471,1472],{"class":662},"\"\n",[652,1474,1475],{"class":654,"line":1206},[652,1476,1477],{"class":662},"  }\n",[652,1479,1480],{"class":654,"line":1351},[652,1481,1482],{"class":662},"}\n",[500,1484,1486],{"id":1485},"why-context-matters","Why Context Matters",[470,1488,1489,1490,1493],{},"We're entering an era where AI agents build, debug, and maintain applications. These agents need ",[473,1491,1492],{},"structured context"," to work effectively:",[555,1495,1496,1503,1510],{},[558,1497,1498,1502],{},[473,1499,1500],{},[478,1501,593],{},": The root cause, so the agent understands what went wrong",[558,1504,1505,1509],{},[473,1506,1507],{},[478,1508,597],{},": An actionable solution the agent can suggest or apply",[558,1511,1512,1516],{},[473,1513,1514],{},[478,1515,600],{},": Documentation for complex issues",[470,1518,1519,1520,1522,1523,1526],{},"Traditional ",[478,1521,480],{}," and generic ",[478,1524,1525],{},"throw new Error()"," provide no actionable context. evlog's structured output is designed for both humans and AI to parse and act on.",[500,1528,1530],{"id":1529},"next-steps","Next Steps",[555,1532,1533,1538,1543,1548,1554,1560],{},[558,1534,1535,1537],{},[486,1536,15],{"href":16}," - The case for adopting evlog on day zero",[558,1539,1540,1542],{},[486,1541,20],{"href":21}," - Install evlog in your project",[558,1544,1545,1547],{},[486,1546,25],{"href":26}," - Get up and running in minutes",[558,1549,1550,1553],{},[486,1551,1552],{"href":37},"Logging Overview"," - Understand the three logging modes in depth",[558,1555,1556,1559],{},[486,1557,1558],{"href":457},"evlog vs pino, winston, consola"," - Feature parity, honest gaps, and migration snippets",[558,1561,1562,1564],{},[486,1563,542],{"href":228}," — scripts, workers, libraries without a web framework",[1566,1567,1568],"style",{},"html pre.shiki code .s7zQu, html code.shiki .s7zQu{--shiki-light:#39ADB5;--shiki-light-font-style:italic;--shiki-default:#89DDFF;--shiki-default-font-style:italic;--shiki-dark:#89DDFF;--shiki-dark-font-style:italic}html pre.shiki code .sMK4o, html code.shiki .sMK4o{--shiki-light:#39ADB5;--shiki-default:#89DDFF;--shiki-dark:#89DDFF}html pre.shiki code .sTEyZ, html code.shiki .sTEyZ{--shiki-light:#90A4AE;--shiki-default:#EEFFFF;--shiki-dark:#BABED8}html pre.shiki code .sfazB, html code.shiki .sfazB{--shiki-light:#91B859;--shiki-default:#C3E88D;--shiki-dark:#C3E88D}html pre.shiki code .s2Zo4, html code.shiki .s2Zo4{--shiki-light:#6182B8;--shiki-default:#82AAFF;--shiki-dark:#82AAFF}html pre.shiki code .swJcz, html code.shiki .swJcz{--shiki-light:#E53935;--shiki-default:#F07178;--shiki-dark:#F07178}html pre.shiki code .sbssI, html code.shiki .sbssI{--shiki-light:#F76D47;--shiki-default:#F78C6C;--shiki-dark:#F78C6C}html .light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html.light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html .default .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html.dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html pre.shiki code .spNyl, html code.shiki .spNyl{--shiki-light:#9C3EDA;--shiki-default:#C792EA;--shiki-dark:#C792EA}html pre.shiki code .sHdIc, html code.shiki .sHdIc{--shiki-light:#90A4AE;--shiki-light-font-style:italic;--shiki-default:#EEFFFF;--shiki-default-font-style:italic;--shiki-dark:#BABED8;--shiki-dark-font-style:italic}html pre.shiki code .sfNiH, html code.shiki .sfNiH{--shiki-light:#FF5370;--shiki-default:#FF9CAC;--shiki-dark:#FF9CAC}html pre.shiki code .sHwdD, html code.shiki .sHwdD{--shiki-light:#90A4AE;--shiki-light-font-style:italic;--shiki-default:#546E7A;--shiki-default-font-style:italic;--shiki-dark:#676E95;--shiki-dark-font-style:italic}html pre.shiki code .sBMFI, html code.shiki .sBMFI{--shiki-light:#E2931D;--shiki-default:#FFCB6B;--shiki-dark:#FFCB6B}",{"title":648,"searchDepth":685,"depth":685,"links":1570},[1571,1572,1573,1578,1579],{"id":502,"depth":685,"text":503},{"id":549,"depth":685,"text":550},{"id":626,"depth":685,"text":627,"children":1574},[1575,1576,1577],{"id":634,"depth":692,"text":41},{"id":785,"depth":692,"text":46},{"id":1217,"depth":692,"text":51},{"id":1485,"depth":685,"text":1486},{"id":1529,"depth":685,"text":1530},"A modern TypeScript logger built for everything you ship. Simple structured logs, wide events, and structured errors in one API — drop-in for console.log, pino, or consola.","md",[1583,1586],{"label":25,"icon":28,"to":26,"color":1584,"variant":1585},"neutral","subtle",{"label":1587,"icon":1588,"to":1589,"target":1590,"color":1584,"variant":1585},"GitHub","i-simple-icons-github","https:\u002F\u002Fgithub.com\u002Fhugorcd\u002Fevlog","_blank",{},{"icon":13},{"title":10,"description":1580},"mVhx71oKgHyTzLn-ydrK0KNoL7AriAU8krm9m2N2H60",[1596,1597],null,{"title":15,"path":16,"stem":17,"description":1598,"icon":18,"children":-1},"The cheapest moment to add structured logging is before the first request. Pick evlog on day zero and your application inherits a structured surface, typed catalogs, an audit trail, AI SDK telemetry, and a drain pipeline you don't have to build later.",1784209286886]